From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yuanhan Liu Subject: Re: [PATCH 3/3] pci: fix crash caused by invaild memory write Date: Wed, 22 Feb 2017 10:36:23 +0800 Message-ID: <20170222023623.GO18844@yliu-dev.sh.intel.com> References: <1487599487-12574-1-git-send-email-hanxueluo@126.com> <1487599487-12574-3-git-send-email-hanxueluo@126.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: dev@dpdk.org, Huanle Han , David Marchand To: hanxueluo@126.com Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id C6C022A5E for ; Wed, 22 Feb 2017 03:34:15 +0100 (CET) Content-Disposition: inline In-Reply-To: <1487599487-12574-3-git-send-email-hanxueluo@126.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" cc the EAL maintainer, David Marchand. On Mon, Feb 20, 2017 at 10:04:47PM +0800, hanxueluo@126.com wrote: > From: Huanle Han > > rte_eal_dev_detach() didn't remove dev from dev_device_list > after free the dev. So the following attached dev wrote to > the freed memory (tailq entry of previous dev) in below stack: > > == Invalid write of size 8 > == at 0x43A9CE: rte_eal_device_insert (eal_common_dev.c:71) > == by 0x42ED9E: pci_scan_one (eal_pci.c:365) > == by 0x42EF4D: pci_update_device (eal_pci.c:391) > == by 0x437F59: rte_eal_pci_probe_one (eal_common_pci.c:357) > == by 0x43AB16: rte_eal_dev_attach (eal_common_dev.c:117) > == by 0x45B3AA: rte_eth_dev_attach (rte_ethdev.c:489) > == ... > > Signed-off-by: Huanle Han The two minor nits also apply here, besides that, Reviewed-by: Yuanhan Liu --yliu